The frequency of the mentions of Go made me prick up my ears so I've done a frequency analysis of language mentions:

   Midori: 31
   Go:     27
   C++:    27
   C:      18
   Rust:   10
   Swift:  03
   D:      02
   Scala:  02

None for Erlang! Could it be said that Joe Duffy is focussing on statically typed languages or systems programming languages? Interesting that Go is most referenced, not C++ :)